/**
 *  MicroEmulator
 *  Copyright (C) 2001-2007 Bartek Teodorczyk <barteo@barteo.net>
 *  Copyright (C) 2006-2007 Vlad Skarzhevskyy
 *
 *  It is licensed under the following two licenses as alternatives:
 *    1. GNU Lesser General Public License (the "LGPL") version 2.1 or any newer version
 *    2. Apache License (the "AL") Version 2.0
 *
 *  You may not use this file except in compliance with at least one of
 *  the above two licenses.
 *
 *  You may obtain a copy of the LGPL at
 *      http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
 *
 *  You may obtain a copy of the AL at
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the LGPL or the AL for the specific language governing permissions and
 *  limitations.
 *
 *  @version $Id: QueueAppender.java 1605 2008-02-25 21:07:14Z barteo $
 */
package org.microemu.log;

import java.util.LinkedList;
import java.util.List;

public class QueueAppender implements LoggerAppender {

	private int buferSize;

	private List queue = new LinkedList();

	public QueueAppender(int buferSize) {
		this.buferSize = buferSize;
	}

	public void append(LoggingEvent event) {
		queue.add(event);
		if (queue.size() > buferSize) {
			queue.remove(0);
		}
	}

	public LoggingEvent poll() {
		if (queue.size() == 0) {
			return null;
		}
		return (LoggingEvent) queue.remove(0);
	}

}
